Improvement in cans for packing meat



G. BROUGHAM.

CANS FOR PACKINGMEAT. I No.179,154. Patented June-27,1876.

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N.PETER5. FHQTO-LI'TNOGHAPNE i"! WASHINGTON D. C.

UNITED S'ra'rEs Parana orrroa GEORGE BROUGHAM, OF CHICAGO, ILLINOIS.

IMPROVEMENT lN CANS FOR PACKING MEAT.-

Speeiiication forming part of Letters Patent No. 179,154, dated June 27,1876; application filed December 31, 1875.

To all whom it may concern:

Be it known that I, GEORGE BROUGHAM, of the city of Chicago, in thecounty of Cook and State of Illinois, have inventedcertain Improvementsin Cans for Packing Meat, of

which the following is a specification:

It isnow well known among those acquainted with the art that one of thebest and most economical methods of preserving meat is by hermeticallysealing the same in suitable cans in a solid or compressed state,without more moisture than is sufficient to preserve the contents in apalatable condition, and that one of the simplest methods of solidifyingor compressing the meat is by the employment of atmospheric pressureexerted upon the outside of the can after the can has been filled, and apartial vacuum has been created therein by thesealing process. whichpressure tends to collapse the can upon the meat, and to solidify thecontents.

The present invention relates to an improved can, which is designedespecially to accommodate itself to this method of solidify-- mg orcompressing the meat.

In the accompanying drawing, which forms a part of this specification,Figure 1 is a side view of my improved can, and Fig. 2 a verticalsection thereof.

Like letters of reference used in said figures indicate like parts.

It will be noticed that my improved can presents a peculiar form,in-that its lateral di' mensions are much larger in proportion to itslongitudinal dimensions than in ordinary vessels. While these relativedimensions may be varied to some extent, yet it is essential, inasmuchas the sides are straight and have not the strength of the bulge formseen in barrels and other like vessels, that they be made short enoughto withstand the atmospheric pressure.

In said drawing, A represents the vertical sheet-metal rim, constitutingthe sides of the drum or cylinder. B B are the bulging or convex heads,which arejoined to A by any of the well-known methods. I prefer,however, that they should beset inside of A, in the manner shown in thedrawing. As to the form of the bulge and the extent thereof, I recommendthat it be not a portion of a perfect sphere, because such form will notso readily yield as when the bulge is somewhat flattened at its upperline. C is the guard plate or bridge placed beneath the vent.

In filling the can I usually prefer to have one of the heads left out,which, after the can is filled full, and, perhaps, slightly heaped, ifthat is necessary to cause it to contain the requisite amount, I pressdown into place, and solder fast.

When the can thus filled has been put through any of the ordinarysealing processes, and the atmospheric pressure brought to bear, theheads readily collapse and follow the meat home to the requisite degreeof solidity.

Having thus described myinvention, what I claim as new, and desire tosecure by Letters Patent, is

The preserved-meat can, havin g heads with an outward bulge, capable ofbecoming an inward bulge, while the heads are secured to 'the sides, andhaving straight sides, the

height of the can being not greater than the diameter of the heads, orof the larger of unequal heads, whereby suificient metal is allowed inthe heads to accommodate the collapse produced by atmospheric pressure,and

the strength and substantial form of the sides is preserved,substantially as specified.

GEORGE BROUGHAM. Witnesses:

A. MoNEILL, G. U.-WEBs'rER.

